Recent Submissions

  • Nations work together to size up Caribbean tsunami hazards 

    Zamora-Sauma, Natalia; Macías-Sánchez, Jorge; Lopez-Venegas, Alberto; Chacon-Barrantes, Silvia (AGU.ORG, 2018-10-04)
    El Caribe es conocido por sus playas tropicales y centros de surf, pero no está exento de terremotos y tsunamis. Durante los últimos 500 años, esta región puede haber estado expuesta a aproximadamente 100 tsunamis, de los ...
  • Polycrystalline indium films in the percolation threshold regime: Time correlation between electric conduction and optical properties with film morphology 

    Vargas, William E.; Clark, Neville; Azofeifa, Daniel E.; Sáenz-Arce, Giovanni; Solís, Hugo; Ramírez Hidalgo, Gustavo (IOP Publishing Ltd., 2014-02-21)
    Polycrystalline indium films have been deposited at room temperature by electron beam evaporation on amorphous quartz substrates. Once deposited, electrical resistance and specular reflection of the films, for wavelengths ...
  • Multiparticle emission in the decay of Ar 31 

    Koldste, G.T.; Blank, B.; Borge, M.J.G.; Briz, J.A.; Carmona-Gallardo, M.; Fraile, L.M.; Fynbo, H.O.U.; Giovinazzo, J.; Grann, B.D.; Johansen, J.G.; Jokinen, A.; Jonson, B.; Kurturkian-Nieto, T.; Kusk, J.H.; Nilsson, T.; Perea, A.; Pesudo, V.; Picado, Esteban; Riisager, K.; Saastamoinen, A.; Tengblad, O.; Thomas, J.C.; Van del Walle, J. (American Physical Society, 2014-06-25)
    A multihit capacity setup was used to study the decay of the dripline nucleus 31Ar, produced at the ISOLDE facility at CERN. A spectroscopic analysis of the β-delayed three-proton decay of 31Ar is presented for the first ...
  • Sizeable beta-strength in 31Ar (β3p) decay 

    Koldste, G.T.; Blank, B.; Borge, M.J.G.; Briz, J.A.; Carmona-Gallardo, M.; Fraile, L.M.; Fynbo, H.O.U.; Giovinazzo, J.; Johansen, J.G.; Thomas, J.C.; Jokinen, A.; Jonson, B.; Kurturkian-Nieto, T.; Nilsson, T.; Perea, A.; Pesudo, V.; Picado, Esteban; Riisager, K.; Saastamoinen, A.; Tengblad, O.; Van del Walle, J. (Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2014-10-07)
    We present for the first time precise spectroscopic information on the recently discovered decay mode β-delayed 3p-emission. The detection of the 3p events gives an increased sensitivity to the high energy part of the ...
  • Hidrography and river plumes in Golfo Dulce, South Pacific of Costa Rica 

    Ballestero Sakson, Daniel; Rincón - Alejos, Fernando (Universidad de Costa Rica, 2015-07)
    Oceanographic variables at 33 stations distributed in Golfo Dulce, Costa Rica, during the dry and rainy seasons between 2009 and 2010, were analyzed with CTD profiles, where salinity, temperature, sigma-T and currents were ...
  • The rip current hazard in Costa Rica 

    Arozarena, Isabel; Houser, Chris; Gutiérrez-Echeverría, Alejandro; Brannstrom, Christian (2015-01-31)
    Deaths from rip currents are a major hazard on global beaches, but few data are available at a national scale to support the development of appropriate intervention programs. Analysis of data from the Judicial Investigation ...
  • Slow westward movement of salinity anomalies across the tropical South Indian Ocean 

    Vargas-Hernández , José Mauro ; Wijffels, Susan; Meyers, Gary; Holbrook, Neil (American Geophysical Union, 2015-08-06)
    Decadal salinity variability is an important characteristic of the ocean. It characterizes differences in evaporative and precipitation fluxes at the surface, and in the subsurface it contributes to steric sea level change ...
  • Polymer gel dosimeter based on itaconic acid 

    Chacón, David; Mattea, Facundo; Vedelago, José; VALENTE, MAURO; Strumia, Miriam (2015-11)
    A new polymeric dosimeter based on itaconic acid and N, N'-methylenebisacrylamide was studied. The preparation method, compositions of monomer and crosslinking agent and the presence of oxygen in the dosimetric system were ...
  • Electrochemical Hydrogen Oxidation on Pt(100): a Combined Direct Molecular Dynamics/Density Functional Theory Study 

    Santana, Juan A.; Saavedra-Arias, José; Ishikawa, Yasuyuki (Electrocatalysis, 2015-08-09)
    We have studied the hydrogen oxidation reaction on various catalytic sites at the water/Pt(100) interface with first-principles direct molecular dynamics and minimum energy pathway calculations. The calculations indicate ...
  • Variations in the geostrophic circulation pattern and thermohaline structure in the Southeast Central American Pacific 

    Ballestero, Daniel; Brenes, Carlos; BENAVIDES, ROSARIO; Salazar, Juan Pablo; Murillo, Gustavo (Revista de Biologia Tropical vol.64 suppl.1 s121-s134 2016, 2016-03)
    This study was conducted in the southeast region of the Central American Pacific, an area of great oceanographic importance due to the presence of various upwelling phenomena and the direct influence of the ENSO on its ...
  • Experimental validation of gallium production and isotope-dependent positron range correction in PET 

    Fraile, L.M.; Herraiz, J.L.; Cal-González, J.; Corzo, P.M.G.; España, S.; Herranz, E.; Pérez-Liva, M.; Picado, Esteban; Vicente, E.; Muñoz-Martín, A.; Vaquero, J.J. (Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment vol.814 110-116 2016, 2016-04-01)
    Positron range (PR) is one of the important factors that limit the spatial resolution of positron emission tomography (PET) preclinical images. Its blurring effect can be corrected to a large extent if the appropriate ...
  • Characterization of the VARIAN®PaxScan 2020+ flat panel detector for quantitative X-ray imaging 

    Geser, Federico Alejandro; Chacón, David; Figueroa, R.; Malano, F.; Santibañez, M.; Valente, M. (X-Ray Spectrometry vol.45 no.3 169-175 2016, 2016-02-19)
    In this work, the response of the VARIAN® PaxScan 2020+ flat panel detector was characterized in terms of spatial resolution and uniformity across the detection area along with detection efficiency for photon beams from ...
  • Sistema Nacional de Monitoreo de Tsunamis 

    Chacon-Barrantes, Silvia (Revista Universidad en Diálogo vol.5 no.2 101-111 2015, 2015)
    En cualquier cuerpo de agua, y más específicamente en cualquier océano, se pude generar un tsunami. Por esto, nuestro país, al tener dos costas, se encuentra expuesto a ellos. Los tsunamis no se pueden evitar ni pronosticar ...
  • Metodología para la Evaluación de Rutas de Evacuación en caso de Tsunami Aplicado a la Costa del Pacífico Norte y Central de Costa Rica 

    Chacon-Barrantes, Silvia; Rivera, Fabio; Arozarena Llopis, Isabel; Barrantes Castillo, Gustavo (Revista en Torno a la Prevención no.16 17-26 2016, 2016)
    Se ha diseñado un método con el objetivo de elaborar una cartografía de rutas de evacuación en caso de tsunami a escala 1:10.000, basado en las directrices establecidas por la Comisión Europea. Las áreas de estudio son las ...
  • Evaluación de la peligrosidad del tsunami de Chile del 16 de setiembre del 2015 para Costa Rica 

    Chacon-Barrantes, Silvia (Revista Ciencias Marinas y Costeras vo.8 no.1 113-128 2016, 2016)
    A Mw 8.3 earthquake took place in Chile on September 16th, 2015 causing a local tsunami. As a consequence, this earthquake prompted the National Tsunami Monitoring System (SINAMOT) in Costa Rica to conduct a tsunami hazard ...
  • Numerical Simulations of the 1991 Limón Tsunami, Costa Rica Caribbean Coast 

    Chacon-Barrantes, Silvia; Zamora, Natalia (Pure and Applied Geophysics vol.174 2945-2959 2017, 2017)
    The second largest recorded tsunami along the Caribbean margin of Central America occurred 25 years ago. On April 22nd, 1991, an earthquake with magnitude Mw 7.6 ruptured along the thrust faults that form the North Panama ...
  • A Collaborative Effort Between Caribbean States for Tsunami Numerical Modeling: Case Study CaribeWave15 

    Chacon-Barrantes, Silvia; Lopez-Venegas, Alberto; Sánchez-Escobar, Rónald; Luque Vergara, Néstor Antonio (Pure and Applied Geophysics vol.175 no.2 1405-1428 2017, 2017)
    Historical records have shown that tsunami have affected the Caribbean region in the past. However infrequent, recent studies have demonstrated that they pose a latent hazard for countries within this basin. The Hazard ...
  • Evaluación de fuentes tsunamigénicas en el sur de Centroamérica y la generación de mapas de evacuación en la costa Pacífica de Costa Rica  

    Chacon-Barrantes, Silvia; Zamora-Sauma, Natalia (Geo - Network of Latinomerican - German alumi (GOAL) 7-10 2015, 2015)
    Costa Rica se encuentra en el extremo oeste de la placa Caribe, en el sur de América Central. En esta región se da la interacción de cuatro placas tectónicas. La placa Cocos se subduce bajo la placa Caribe y la microplaca ...
  • Several Tsunami Scenarios at the North Sea and their consequences at the German Bight 

    Chacon-Barrantes, Silvia; Narayanan, Rangaswami; Mayerle, Roberto (Journal of Tsunami Society International vol.32 no.1 2013, 2013)
    Tsunamis occurred in the past at the North Sea, but not frequently. There are historical and geological records of several tsunamis: the Storegga tsunami caused sediment deposits in Scotland 8,000 years ago and records of ...
  • Graphene flakes obtained by local electro-exfoliation of graphite with a STM tip 

    Rubio-Verdú, Carmen; Sáenz-Arce, Giovanni; Martínez - Asencio, J.; Milan, D. C.; Moaied, M.; Palacios, J.J.; Caturla, M.J.; Untiedt, C. (Physical Chemistry Chemical Physics vol.11 no.19 8061-8068 2017, 2017-02-24)
    Graphite surfaces can be manipulated by several methods to create graphene structures of different shapes and sizes. Scanning tunneling microscopy (STM) can be used to create these structures either through mechanical ...

View more